I've got hedging all round my East facing back garden and quite a long hedge in the front garden too, which is essentially south facing. What's a good rule of thumb of what to put in a border in front of a hedge? Currently it's just lawn up to the hedge, it needs more seasonal interest. Does a border in front of a hedge need as many shrubs as people say you need in a border against a fence, as it has a dark green backdrop already? Can I get away with taller spindly perennials and grasses and have a shallower border than the suggested 2 metres (I've read). Or does it need more oomph from shrubs, still? I can't seem to find many online pictures of borders in front of hedges to determine what works well.